Senior Sergeant Brendan White from the Townsville police asks motorists to be aware of the change in road conditions as heavy rain continues.

"Obviously the road will be wet so stopping distances will change so slow down to under the speed limit," he says.

Even shallow water over the road can compromise the road surface or push cars off the road into floodwaters says Senior Sergeant White.

"Every year people attempt to cross flooded roadways whether it is just impatience or unsure of what they should do, but there is a definite danger in trying to do that, not only to themselves but to people who then have to try and rescue them," he says.